It is a rifled muzzleloader Howitzer of 21 centimeters , model 1870.Manufactured in the royal factory of cannons of Trubia ,Asturias,Spain.

Many thanksfor your reply!

Unfortunately, the Spanishcoastal artillery is almost unknownin Russia. On ourforumFortovedthesehowitzerare called as"cannon".Now Irealize thatthis is a mistake.

The battery De la Divina Pastoda is wellpreserved to this day, Ivisited this placelast year.Another210-mm howitzers andshellsI have seenin theMorro castle in Habana and in the Castillo de Jagua nearCienfuegos:

and you have a photo of smooth bore bronze cannons of 16 cm,this cannons were rifled in 1864 year in the Royal Factory Cannons of Sevilla ,Spain ,and shoot ammunition .-1.Tetones.The first rifled cannon in Spain was in 1859 year,was a 8 cm gun ,in the factory Sevilla.In the Habana there are smooth bore and rifled bronze guns.

In Russian for coastal defensesofHabana in 1898 is the book ofJakov Zhilinsky"Spanish-American War", St.Petersburg,1899.Ya.Zhilinsky was Colonel of GenralStaffof the Russian army and Russian Imperator Nikolay II was sent himto the Spanishtroops inCuba in1897-1898.Hewas a Russianmilitaryobserveron thewar.

After the war colonel Zhilinsky wrotea report thatwas publishedin book form.Unfortunately, the bookwas publishedin the oldRussian orthographyand notconverted intoa modern look.Incoastal batteriesin the bookshows the number ofguns andmortars, and theircaliber.Also in thebook describes thebattles andcombat useof batteriesof Havana,Matanzas,Cardens and more. Through this bookI am found a Battery №1in Habana...